回溯人类经济活动的发展进程可以看到：社会经济发展总是在经济结构的变迁中实现的。从这个意义上说，一部人类经济发展历史就是人类不断调整、转换经济结构的历史。在不同的历史时期、不同的发展阶段，在不同的国家或地区、不同的政治经济体制下，经济结构的调整总是现实地进 Looking back at the development of human economic activities, we can see that socio-economic development is always achieved in the course of changes in economic structure. In this sense, a history of the economic development of mankind is the history of man’s constant readjustment and transformation of the economic structure. In different historical periods and stages of development, in different countries and regions and in different political and economic systems, the adjustment of economic structure has always been realistic